move back and forth造句

1、And what happens if you want to move back and forth between a bunch of different letters?
如果你想阅读，不同的书信呢？

2、Some self sealing argument move back and forth from interesting to false claims.
有些自我封闭式论点来回变化,从有趣的到错误的宣称。

3、Multipolar pump. Polluted water pump. Move back and forth pump and jumping equipment.
可使用在循环水泵、多级泵、污水泵、往复式泵等有鼠动或跳动的设备上。

4、They may move back and forth between the U.S. and the home country.
他们可能在美国和自己的祖国之间搬来搬去。

5、To move back and forth alternately.
往复运动交互地向后、向前运动